I am not a fan of touchscreens..after using Dopod when it was one of the 'in' mobile pda-s to have back in 2006, i've sworn off touchscreens appliances. Maybe it's my fat fingers..so never really caught on the iphone fever. Instead I've been a BB loyalist, first the Curve then the Bold. But as much i love their qwerty keypads, the software had failed me many times. I am currently on my third BB in 2 years.
However, daddy gave me an ipad2 recently and ofcourse the typing has improved as the qwerty is bigger (fat fingers remember). But i still find navigating for the apostrophes and quote symbols a hassle. Maybe over time it'll be easier...
Overall, i find the ipad is useful to past time only while waiting either at the airport or on the plane, but then again I also have my DS lite for that same reason. The fact is doesn't support flash limiys your surfing satisfaction but cool apps like djmixer and instagram was very much welcomed and the skype quality is also better than my netbook.
Another thing i find it useful for is notes. Now i can keep all my notes in one place especially work notes instead of writing in a new one everrytime i forgot where i put it last.
I guess my dad summarised it best when i suggest he gets one for himself, "i only buy what I need, not what I want..."